Ues this function to redirect admin to dashboard
function admin_login_redirect( $redirect_to, $request, $user )
{
global $user;
if( isset( $user->roles ) && is_array( $user->roles ) ) {
if( in_array( "administrator", $user->roles ) ) {
return $redirect_to;
}
}
}
add_filter("login_redirect", "admin_login_redirect", 10, 3);
For more/brief detail read this article.
Page ID don’t come in quotes, See this line of your
if (is_page('484')){
Change this line like this
//Removed quotes from Page ID
if (is_page(484)){
As an alternate this can be done with Page Slug
also like this
//Slug will come in quotes
if (is_page('Type_Page_Slug_Here')){